Edited to add an improved version (after some tests) + a variant with built-in support for people stuck with Cura.If you got suckered by the 3dprintersonlinestore fake sale and bought one of these, the fan-duct-flavour-of-the-week they provide is generally pretty inadequate: far away from the nozzle, blowing from one direction so air might not get to the far side of the print.Print InstructionsYou will need support for the bracket.I printed mine out of PLA, 190 degrees, 60% infill (there's not much of it), 0.8mm wall thickness (to match the model), 50mm/s, with support ("touching buildplate" in Cura)I guess Colorfabb XT or ABS might be more advisable as they take heat better, but I have no ABS and XT is so damn expensive and I was just experimenting... anyway, the thing has been in use for hours without an issue.As a side note, cura's support structures are atrocious, maybe a better slicer would be advisable (or one could separate the bracket from the duct, devise a way to clip them together and print them separately...)